diff options
Diffstat (limited to 'samples/bpf/sockex3_user.c')
| -rw-r--r-- | samples/bpf/sockex3_user.c | 26 |
1 files changed, 10 insertions, 16 deletions
diff --git a/samples/bpf/sockex3_user.c b/samples/bpf/sockex3_user.c index 4dbee7427d47..56044acbd25d 100644 --- a/samples/bpf/sockex3_user.c +++ b/samples/bpf/sockex3_user.c @@ -6,7 +6,6 @@ #include "sock_example.h" #include <unistd.h> #include <arpa/inet.h> -#include <sys/resource.h> struct flow_key_record { __be32 src; @@ -25,16 +24,13 @@ struct pair { int main(int argc, char **argv) { - int i, sock, key, fd, main_prog_fd, jmp_table_fd, hash_map_fd; - struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; + int i, sock, fd, main_prog_fd, hash_map_fd; struct bpf_program *prog; struct bpf_object *obj; char filename[256]; - const char *title; FILE *f; snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); - setrlimit(RLIMIT_MEMLOCK, &r); obj = bpf_object__open_file(filename, NULL); if (libbpf_get_error(obj)) { @@ -48,26 +44,24 @@ int main(int argc, char **argv) goto cleanup; } - jmp_table_fd = bpf_object__find_map_fd_by_name(obj, "jmp_table"); hash_map_fd = bpf_object__find_map_fd_by_name(obj, "hash_map"); - if (jmp_table_fd < 0 || hash_map_fd < 0) { + if (hash_map_fd < 0) { fprintf(stderr, "ERROR: finding a map in obj file failed\n"); goto cleanup; } + /* find BPF main program */ + main_prog_fd = 0; bpf_object__for_each_program(prog, obj) { fd = bpf_program__fd(prog); - title = bpf_program__title(prog, false); - if (sscanf(title, "socket/%d", &key) != 1) { - fprintf(stderr, "ERROR: finding prog failed\n"); - goto cleanup; - } - - if (key == 0) + if (!strcmp(bpf_program__name(prog), "main_prog")) main_prog_fd = fd; - else - bpf_map_update_elem(jmp_table_fd, &key, &fd, BPF_ANY); + } + + if (main_prog_fd == 0) { + fprintf(stderr, "ERROR: can't find main_prog\n"); + goto cleanup; } sock = open_raw_sock("lo"); |